C

What is blood? It is the red liquid which comes out of your finger when you cut it. There are bout thirteen pints(???) of blood in a man' s body. He can give a pint of blood at a time to

blood bank for the use of other men who may need it. A healthy body makes up one pint of bloo

quickly.

What does our blood do for us? It takes food to all parts of our bodies and takes waste awa

from them. All the parts of our bodies are made up of cells, and these cells, which are very small

all need food all the time.

The blood is like a stream. The cells take what they need out of the blood stream, as plants an fishes take their food out of water. The blood stream carries food and oxygen which it has taken up our lungs to all the cells in the body.

What makes the blood go on moving round the body in a stream? The heart sends it round.

man' s heart is about the Size of his fist. The heart is a pump. It has rooms in it with doors betwee

them. It pumps blood in and out through these doors by changing the size of the rooms so that th

doors open and shut.

The heart keeps stream of blood going all round the body and back again to itself. Everywhel the blood stream does two things: supplies the cells with food and oxygen and takes away the waste It is as if the blood kept the little fires in the cells burning and took away the ashes.

49. Blood is the_____

A. red liquid which comes from your finger    B. red liquid which we can see

C. red liquid which flows in a man's body     D. red cell

50. The blood in a man' s body__________.

A. makes food all the time

B. takes food to all cells in the body and takes waste away

C. supplies the cells with food and oxygen from them

D. takes waste away from the cells

51. __ makes the blood go on moving round the body in a stream.

A. The heart          B. The lung          C. The cell          D. The pump

52. This article tells us about__________.

A. a stream of blood                        B. the use of the heart

C. a wonderful pump                       D. something about blood

C

      What is blood? It is the red liquid which comes out of your finger when you cut it. There are bout thirteen pints(品脱) of blood in a man' s body. He can give a pint of blood at a time to

blood bank for the use of other men who may need it. A healthy body makes up one pint of bloo

quickly.

      What does our blood do for us? It takes food to all parts of our bodies and takes waste awa

from them. All the parts of our bodies are made up of cells, and these cells, which are very small

all need food all the time.

      The blood is like a stream. The cells take what they need out of the blood stream, as plants an fishes take their food out of water. The blood stream carries food and oxygen which it has taken up our lungs to all the cells in the body.

      What makes the blood go on moving round the body in a stream? The heart sends it round.

man' s heart is about the Size of his fist. The heart is a pump. It has rooms in it with doors betwee

them. It pumps blood in and out through these doors by changing the size of the rooms so that th

doors open and shut.

      The heart keeps stream of blood going all round the body and back again to itself. Everywhel the blood stream does two things: supplies the cells with food and oxygen and takes away the waste It is as if the blood kept the little fires in the cells burning and took away the ashes.

49. Blood is the_____

     A. red liquid which comes from your finger    B. red liquid which we can see

     C. red liquid which flows in a man's body     D. red cell

50. The blood in a man' s body__________.

      A. makes food all the time

      B. takes food to all cells in the body and takes waste away

      C. supplies the cells with food and oxygen from them

      D. takes waste away from the cells

51. __ makes the blood go on moving round the body in a stream.

      A. The heart          B. The lung          C. The cell          D. The pump

52. This article tells us about__________.

      A. a stream of blood                        B. the use of the heart

      C. a wonderful pump                       D. something about blood

Dear Ralf,

I have received your letter from school and am glad to know that you are becoming responsible(有责任的)enough to decide on your career.

You are now in the final year of college and are about to start more independent life in society. You know that a generation divides us, and the conditions of social life were different in my days. However, all I can say as advice is that you must select a career wisely. The first consideration is your interest. You can only succeed and feel happy when you do something you enjoy. Your job must be both gainful and satisfying. Then, you must read up on the latest books on the field you are aiming at. Also, you should get familiar with the men and women in the profession of that field. When mind and heart function together, success is inevitable(必然的).

No career is more or less important than any other career. It takes different people to operate the machine of life. I think your interest may lie in the field of making TV programs. Your great communication skills, your active participation(参与) in school plays and the prizes you have won in speech competitions all point in that direction. So a career in Mass Communication and TV film production proves suitable for you. If you succeed and make it in that field, fame and treasure will both follow.

Think a thousand times before making any final decision regarding your career. Anyhow, I want you to be a man of success.

I know that you are mature(成熟的) enough to think for yourself.

With all the best wishes!

Your loving father

56. We can infer that Ralf wrote a letter to ask for advice on how to ________.

A. prepare for a competition.                         B. communicate with others

C. choose a career                                         D. get good marks

57. What can we know about Ralf?

A. He has graduated from college.               B. He gets on badly with his father.

C. He has taken part in school plays.           D. He won prizes in the field of making films.

58. Ralf’s father thinks that ________.

A. fame is more important than treasure

B. every career is of the same importance

C. Ralf is too young to make a decision himself

D. there is no real understanding between parents and children

59. The father suggests that his son should ____________.

A. consider his interest first when choosing a career.

B. make friends with successful people.

C. be never proud when making progress

D. be active in school activities.

Fresh flowers actually continue to grow while in a vase．So in order to keep flowers fresh, you need to consider what the flowers need to grow and stay healthy．Flowers need water, light, and food．Besides, you need to be aware of a few precautions to take．

Distilled water（蒸馏水） is the best kind of water to use for fresh flowers, because there are no chemicals in it．Change the water for your fresh flowers every day or no less than every 2 days to prevent bacteria（细菌） building up．Cut the stems under water again before putting them back in the vase, so that they will be able to draw water up easily．

Keep your fresh flowers out of direct sunlight．At night, put them in the fridge．This will prolong their life．Adding commercial flower food to good water is probably the best method of keeping flowers fresh．Some people put sugar in the water for food．That is OK, but commercial flower food has bacteria-killing ingredients, which can make the water more acidic（酸性的）．If you want a more natural food for your fresh flowers, try water that has been specially treated．That solution will also give the water acidity, sugar, and bacteria-killing ability．

Keep your fresh flowers away from fruit．Fruit gas, or ethylene, will reduce the life of your fresh flowers, making them get older faster．Ethylene is what makes fruit ripen．It is given off by dead flowers, too, so be sure to remove them．

If you follow these tips, your fresh flowers will last a long time and beautify any room in which you put them．

1．What does the underlined word precautions in Paragraph 1 mean?

A．problems that happen to flowers． B．advantages of having flowers．

C．measures taken to prevent problems．   D．preparations to grow flowers outside．

2．The fact that distilled water is most beneficial for fresh flowers indicates that ______．

A．distilled water is perfect for people to drink

B．running water shouldn’t be used to water flowers

C．it takes great efforts to keep flowers fresh

D．fresh flowers aren’t used to certain chemicals

3．In order to prolong the life of fresh flowers, you should ______．

A．protect them from direct sunlight during the daytime

B．put them in a damp place at night

C．put them in a fridge all the time

D．put them near water during the daytime

4．Which of the following is the best method of keeping flowers fresh?

A．Cutting the stems under water before putting them back．

B．Using distilled water and commercial flower food．

C．Keeping them away from fruit gas．

D．Watering them with water which contains sugar．